Created
November 8, 2016 05:01
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| for (int i = 2; i*i <= n; i++){ | |
| if (!prime[i]){ | |
| for (int j = i*i; j <= n; j += i){ | |
| prime[j] = true; // prime[j] : false > j is prime | |
| } | |
| } | |
| } |
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